Note H - Derivative Instruments (Details Textual) - USD ($) $ in Thousands	9 Months Ended
Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Derivative Liability, Total	$ 0
Research and Development Expense [Member]
Gain (Loss) on Derivative Instruments, Net, Pretax, Total	41	$ 83
Selling and Marketing Expense [Member]
Gain (Loss) on Derivative Instruments, Net, Pretax, Total	4	8
General and Administrative Expense [Member]
Gain (Loss) on Derivative Instruments, Net, Pretax, Total	7	$ 14
Foreign Exchange Option [Member]
Price Risk Cash Flow Hedge Asset, at Fair Value	$ 0		$ 0

Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities not subject to a master netting arrangement and not elected to be offset.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
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-Section 50
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
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- Definition

Aggregate net gain (loss) on all derivative instruments recognized in earnings during the period, before tax effects.

+ References

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Fair value as of the balance sheet date of all price risk derivative assets designated as cash flow hedging instruments.

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